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Front view of 20mm light dependant resistor LDR GL20528

Closeup of GL20528 LDR photo cell sensing surface

Side angle of 20mm photoresistor showing light window

20mm LDR Sensor Photoresistor Photo Cell 20528 GL20528

Available:Out of Stock

Product SKU: KG1053

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₹ 59 ~~₹ 109~~

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Specification

Description

20mm LDR Sensor Photoresistor Photo Cell 20528 GL20528 – ldr light dependent resistor

The resistance of the 20mm GL20528 Light Sensitive Photoresistor LDR changes with ambient brightness and helps automate lighting functions. As intensity increases, resistance drops, making this ldr light dependent resistor ideal for smart switches and sensing projects. Additionally, makers evaluating the cost of ldr sensor appreciate that it integrates cleanly with a reliable light dependant resistor circuit. If you need to measure ambient light with minimal complexity, this solution works effectively in both bright and dark environments.

Two Cadmium Sulphide photo-conductive cells provide eye-like spectral response, and resistance falls steadily with increased illumination. Common applications include batch counting, automatic lighting, smoke detection, and burglar alarms.

Technical details – light dependant resistor circuit integration

Diameter: 20mm
Spectral Peak: 560nm
Pins: 2
Dark Resistance: 2kΩ
Light Resistance: 10-20kΩ
Max Voltage: 500VDC
Max Power: 0.5W
Response Time: 30μS
Additional: Dark Resistance Max 2kΩ

Analog Applications – cost of ldr sensor value

Camera Exposure Control
Auto Slide Focus – Dual Cell
Photocopy Machines – Toner Density
Colorimetric Test Equipment
Densitometer
Electronic Scales – Dual Cell
Automatic Gain Control – Modulated Light Source
Automated Rear View Mirror

Digital Applications – dependable designs

Automatic Headlight Dimmer
Nightlight Control
Oil Burner Flame Out
Streetlight Control
Absence / Presence (Beam Breaker)
Position Sensor

Other applications

Annunciator
Camera automatic photometry
Electronic toy
Industrial control
Light control
Light control lamp
Photoelectric control
Switch

Features – optimized for stable performance

This ldr light dependent resistor delivers fast response, eye-matched spectral precision, and flexible mounting options, ensuring dependable output across nearly any light dependant resistor circuit. In addition, planning for the overall cost of ldr sensor helps when scaling batches for labs and production.

Coated with epoxy
Good reliability
High sensitivity
Small volume
Fast response
Good spectrum characteristic
Model: GL20528 (GM20528)
Size: 20mm
Max. Voltage: 500 VDC
Max. Power: 500 mW
Spectrum Peak: 560 nm
Light Resistance: 10–20 kΩ
Dark Resistance: 2 kΩ
Υ Value: 0.6
Increase Response Time: 30 ms
Decrease Response Time: 30 ms

Applications – scalable with cost of ldr sensor planning

Automatic streetlight control
Camera exposure control
Nightlight automation
Flame detection
Position and presence detection
Light-sensitive alarms
Electronic toy applications
Solar-powered lighting systems
Industrial light control systems
Brightness adjustment in displays

Specifications

Model	Max Pressure(VDC)	Max Pwr(MW)	Ambient temp(°C)	Spectral Peak (Nm)	Bright Resistor (Ω)	Dark Resistor (MΩ)	Response Time (ms)
5506	150	100	-30~+70	540	4-7	0.5	Rise:30 Fall:30
5516	150	100	-30~+70	540	5-10	0.5	Rise:30 Fall:30
5528	150	100	-30~+70	540	10-20	1	Rise:20 Fall:30
5537	150	100	-30~+70	540	20-30	2	Rise:20 Fall:30
5549	150	100	-30~+70	540	100-200	10	Rise:20 Fall:30